I need help choosing a general purpose IEM

I'm a long time lurker on this site. I've decided to bite the bullet and make an account.

Well looks like my wallet isn't going to be too happy.

Onto the topic, I need an IEM for general purpose use with my Clip+ music player and my Galaxy S3 cell phone.
Currently I use the Etymotic Research HF5 and I have some issues with it. Firstly, the isolation is too high for when I need awareness and the cable is microphonic.
Other than that, I love the sound.

What I want in my new IEM:

A somewhat balanced sound (no harsh treble or monster bass)
Low microphonics (an absolute must)
If possible one with a flat impedance curve from 20Hz-20kHz (dynamic), so I kind of want to stay aware from armature/multi-armature
Not an over the ear design
Low isolation (so if a classmate near me calls me out, I can still hear while listening on medium volumes)
Under $100 USD

I tried a friend's JVC Xtreme Xplosives and while I didn't like the sound, I was impressed with the design which had very minimal microphonics.

If you want to hear your surroundings at least to some degree, then you need a ported IEM, or to hear your surroundings even better, traditional earbuds. Traditional earbuds don't give that much bass though. The Panasonic RP-HJE450 IEM is ported, although with the music playing at medium volume you might still not hear your surroundings well enough. When I need to hear my surroundings I use the JVC HA-EB75 earbuds with ear hooks. It is only around $8 and has decent enough highs and mids for casual listening, but the bass is somewhat weak. When I boost the bass on my player by 8 db though, then it is pleasant enough to use.

The most open IEM seems to be the Phiaton PS210. I haven't tried it, but read reviews of it.

If you want to hear your surroundings at least to some degree, then you need a ported IEM, or to hear your surroundings even better, traditional earbuds. Traditional earbuds don't give that much bass though. The Panasonic RP-HJE450 IEM is ported, although with the music playing at medium volume you might still not hear your surroundings well enough. When I need to hear my surroundings I use the JVC HA-EB75 earbuds with ear hooks. It is only around $8 and has decent enough highs and mids for casual listening, but the bass is somewhat weak. When I boost the bass on my player by 8 db though, then it is pleasant enough to use.

The most open IEM seems to be the Phiaton PS210. I haven't tried it, but read reviews of it.